109 e4 performance

[Crumpp]

I havent heard of a single LW report complaining about the manufacturer's specifications being wrong.

It definitely gets fixed if it does occur. Focke Wulf had an issue with one of its subcontractors, Dornier (NDW) not meeting specifications.

It was discovered when the Luftwaffe was rejecting a large number of aircraft. The complaint was excessive vibration and fuel consumption. It generated several reports on the issue and was fixed promptly. It caused NDW to suffer greatly increased oversight and they almost lost their contract.